package gitcmd

import (
	"context"
	"testing"
)

func TestListTags(t *testing.T) {
	f := newFixture(t)
	ts, err := f.repo.ListTags()
	if err != nil {
		t.Fatal(err)
	}
	if len(ts) != 2 {
		t.Fatalf("len = %d, want 2", len(ts))
	}

	byName := map[string]Tag{}
	for _, tg := range ts {
		byName[tg.Name] = tg
	}

	v1, ok := byName["v1.0"]
	if !ok {
		t.Fatal("missing tag v1.0")
	}
	if !v1.IsAnnotated {
		t.Error("v1.0 IsAnnotated = false, want true")
	}
	if v1.Tagger != aliceName {
		t.Errorf("v1.0 Tagger = %q, want Alice", v1.Tagger)
	}
	if v1.Message != "release v1.0" {
		t.Errorf("v1.0 Message = %q, want 'release v1.0'", v1.Message)
	}
	if len(v1.SHA) != 40 {
		t.Errorf("v1.0 SHA len = %d, want 40 (tag object)", len(v1.SHA))
	}
	if len(v1.ShortSHA) < 7 {
		t.Errorf("v1.0 ShortSHA = %q, want >=7 chars", v1.ShortSHA)
	}

	v09, ok := byName["v0.9"]
	if !ok {
		t.Fatal("missing tag v0.9")
	}
	if v09.IsAnnotated {
		t.Error("v0.9 IsAnnotated = true, want false")
	}
	if v09.Tagger != "" {
		t.Errorf("v0.9 Tagger = %q, want empty (lightweight)", v09.Tagger)
	}
	if v09.SHA != f.c2 {
		t.Errorf("v0.9 SHA = %q, want commit SHA %q", v09.SHA, f.c2)
	}
	if !v09.TagDate.IsZero() {
		t.Errorf("v0.9 TagDate = %v, want zero (lightweight)", v09.TagDate)
	}
}

func TestListTagsEmptyRepo(t *testing.T) {
	dir := t.TempDir()
	bare := dir + "/empty.git"
	gitRun(t, "", nil, "init", "-q", "--bare", bare)
	r, err := OpenRepository(context.Background(), bare)
	if err != nil {
		t.Fatal(err)
	}
	ts, err := r.ListTags()
	if err != nil {
		t.Fatalf("ListTags on empty repo: %v", err)
	}
	if len(ts) != 0 {
		t.Errorf("empty repo tags = %d, want 0", len(ts))
	}
}